There were more than 600 law-enforcement officers and security personnel assigned to Grand Park. A perimeter was set up around the park with checkpoints at the entrances, but the Los Angeles Police Department said there were no credible security threats to the greater LA area.

Across the Atlantic, European cities including Berlin, London, Paris and Rome stepped up security ahead of their celebrations, following truck-ramming attacks in 2016 on crowds in Berlin and Nice, France.

South Korea

In Seoul, Boram Brian Kim took video of fireworks over the bustling streets of the South Korean capital. His favorite memory of 2016, he said, was "traveling in Europe and southeast Asia and getting to meet a lot of new people."